Pump.



PATENTBD 061279, 1906.

M. JOHNSON.

PUMP.

APPLICATION FILED MAY 11,1905.

Inventor Attorneys sendale, in the county of Fond du 7 mg characters, is illustrated the preferred closed bottom 31 and open at the top and with is provided with a closure .12, having a rim separable for thorough cleansing and held to UNITED STATES PATENT OFFICE.

Specification of- Letters Patent.

Patented Oct. 9, 1906.

Application filed May 11 1905. Serial No. 269,952.

To all whom it may concern:

Be it known that L-MARINE JOHNSON, a citizen of the United States, residim &t 'RO- Tiac and State of Wisconsin, have invented a new and useful Pump, of which the following is'a specification I This invention relates to pumps, more particularly to pumps adapted for transferring milk, cream, and like li uid substances from place to place, and has lor its-object to p roduce a simply-constructed and efiicient device of this character whereby the liquid is caused to flow from one receptacle to another by the alternate compression and exhaustion of air and without permitting the liquid to come in contact with the air-actuating mechanism. m

Another object of the invention is to pro duce a simply-constructed device of this character wherein all the parts are easily gether by a single bail and set-screw. With these and other objects in view, which will appear as the nature of the invention is better understood, the same consists in certain novelfeatures of construction, as hereinafter fully described and claimed.

' In the accompanying drawings, forming a part of this specification, and in which corresponding parts are denotedby like designatform of embodiment of the invention capable of carrying the same into practical operation, it being understood that the invention is not necessarily limited thereto, as various changes in the shape, proportions, and general as semblage of the parts may be resorted to without departing from the principle of the invention or sacrificing any of the advantages of this invention within the scope of the appended claim.

inv the drawing the figure is a longitudinal sectional elevation of the device complete.

The improved device comprises a chamber 10, preferably cylindrical, with an integral an integral lateral rim 20 at the open end. Depending from the closed bottom 31 1s asmaller chamber 32, into the lower end of which the suction-pipe 11 leads'and in the'upper end of which a valve 15 is seated. The chamber 10 33 depending within the open' top of the chamber and with a flange 34 hearing over bular member 14 and its seat, the tubular.

member thus serving as a stop to prevent the unseating of the valve when open.

Rising from the closure 12 is a smaller chamber 16, integral with the closure, which for the purpose of this description is referred to as t e valve-chamber and is openv at the outer end and provided with a detachable closure 17 and from which the discharge-conduit 18leads. A valve 19 is seated in the upper end of the tubular member 14 and opens into the chamber 16. Engaging the rim 20 are theinwardly-extending ends 21 22 of a bail 23, the loop of the bail enlarged, as at 24, and having a threaded aperture for receiving a set-screw 25 for bearing upon the valve-chamber closure 17. A stem 26 extends from the lower end of the screw through an aperture in the closure 17 and into thevalve-chamber 16 to form a check to the valve- 19 and preventing-it from unseating when operated. An air-pipe 27 leads into the chamber 10 near the top and is connected at theother end to a suitable mechanism whereby air may be alternately compressed into and exhausted from the chamber 10. Any suitable device may beemployed for thus actuating the air, such as a cylinder 28, having a plunger or piston 29 an piston-rod 30, t

by any approved power. By this simple construction it will be obvious that when the plun er 29.is drawn outwardly a suction wil be produced in the conduit 11, which will open the valve 15 to cause the liquid to rise into the chamber 10, the amount being governed by the force of the suction and the length of the. stroke of the plunger. Then at the return stroke of the plunger the compression of the air will instantly seat the valve 15 upon the intake 11 and force the liquid which has been drawn into the amber 10 into the tubular member 14 and thence through valve 19, chamber 16, and discharge-conduit 18, and this action may be continued indefinitely or until e latter to be operated too the liquid has been all transferred. The cathe extended rim 20, a flexible packing-ring of its piston 29 will not cause the liquid to which is very essential in han ling milk,- cream, and like delicate liquids.

The valves 15 and 19 being large and free acting, the liquids are not crowded or compressed; Hence the particles are not separated or partially churned in passing through the apparatus, as so fre uently occurs when moving milk by the ordinary pumps.

The milk is caused to move into the chamber 10 by the flexible and yielding atmospheric pressure upon the mass in the initial re ceptacle and then forced into the final receptacle by a correspondinglyyielding means, the air-pressure above the mass in the chamber produced by the return stroke of the piston 29 thus securing the desired results with the least possible agitation of the milk.

It will also be noted the device is readily separable into its component parts for thorough cleansing at frequent intervals, which is so very essential with all apparatus with which m1lk or similar easily-affected liquids come in contact.

The devicewill be found especially valuable in creameries and cheese-factories and similar localities and may be constructedin any required size or capacity and operated by any required power.

Having thus described the invention, What is claimed is In a pump, a chamber open at one end and with an inlet at the closed end, an inlet-valve seated at the juncture of the inlet and chamber, a tubular member open at'the ends and with a lateral flange intermediate the ends for bearing upon the open end of'the chamber and forming a detachable closure to the same andmaintaining the inner end of the tubular member spaced from the inlet-valve and preventing the displacement of the same, said tubular member having a lateral dis 5 charge exteriorly of the closure-valve and an internal valve-seat adjacent to 'the' lateral discharge, a valve upon said tubular-m'emb ervalve seat, a closure detachably disposed upon the outer end-of saidtubular member,- 5 a yokeextending over said tubular-member closure and connected at'the'ends to said chamber, a clamp-sorew operating through said yoke and bearing upon said-closure, a pin extending from'said screw through v said 6 closure and spacedat its free end from the tubular-member valve and preventing the displacement of the same. In testimony that Iclairh the foregoing as my own I have hereto aflixed my signature 6 in-the presence of two itnesses.

, MARINE JOHNSON; Witnesses: T

P. E. LE FEvnE,

ALBERT S. SQHW 'NDT. 

